After rising steadily all week, Nio (NYSE:NIO) stock is inching close to pulling itself out of penny stock territory. Today, the Chinese electric vehicle (EV) producer is up on the news that it is making progress regarding its semi-solid-state battery packs. As EV demand has waned, Nio has shifted focus toward its charging and EV battery operations. This strategy appears to be paying off. NIO stock is up today as the company opens its new battery technology to the Chinese public and gets ready for the offic ...